|
Server : Apache/2.4.41 (Ubuntu) System : Linux vmi1525618.contaboserver.net 5.4.0-105-generic #119-Ubuntu SMP Mon Mar 7 18:49:24 UTC 2022 x86_64 User : www-data ( 33) PHP Version : 8.2.12 Disable Function : NONE Directory : /usr/src/linux-headers-5.4.0-105/include/linux/ |
Upload File : |
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_PFN_H_
#define _LINUX_PFN_H_
#ifndef __ASSEMBLY__
#include <linux/types.h>
/*
* pfn_t: encapsulates a page-frame number that is optionally backed
* by memmap (struct page). Whether a pfn_t has a 'struct page'
* backing is indicated by flags in the high bits of the value.
*/
typedef struct {
u64 val;
} pfn_t;
#endif
#define PFN_ALIGN(x) (((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
#define PFN_PHYS(x) ((phys_addr_t)(x) << PAGE_SHIFT)
#define PHYS_PFN(x) ((unsigned long)((x) >> PAGE_SHIFT))
#endif